WO1986006150A1 - Burner for fuel gases, especially for boilers and process for the burning of fuel gases - Google Patents

Burner for fuel gases, especially for boilers and process for the burning of fuel gases Download PDF

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Publication number
WO1986006150A1
WO1986006150A1 PCT/CH1986/000036 CH8600036W WO8606150A1 WO 1986006150 A1 WO1986006150 A1 WO 1986006150A1 CH 8600036 W CH8600036 W CH 8600036W WO 8606150 A1 WO8606150 A1 WO 8606150A1
Authority
WO
WIPO (PCT)
Prior art keywords
burner
gas
preferably according
air
control piston
Prior art date
Application number
PCT/CH1986/000036
Other languages
German (de)
French (fr)
Inventor
Albert GÖTTE
Original Assignee
Ygnis S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ygnis S.A. filed Critical Ygnis S.A.
Priority to DE8686901330T priority Critical patent/DE3662724D1/en
Priority to JP61501465A priority patent/JPH0735885B2/en
Priority to AT86901330T priority patent/ATE41991T1/en
Publication of WO1986006150A1 publication Critical patent/WO1986006150A1/en
Priority to DK594986A priority patent/DK163741C/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
    • B01F35/833—Flow control by valves, e.g. opening intermittently
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes

Definitions

  • Burners for gaseous fuels in particular for heating boilers, and methods for burning gaseous fuels
  • the present invention relates to a burner for gaseous fuels, in particular for heating boilers, and a method for burning gaseous fuels with excess air when the load changes in a combustion chamber.
  • the present invention aims to create a burner for gaseous fuels, which a possibility of regulation on a larger scale with optimal operation of the
  • the burner according to the invention which meets these requirements in a broad sense, is characterized in that displacement and/or rotary means are provided in order to achieve an at least approximately constant volume ratio of gas and combustion air at least in the power range of 10-100% of the nominal power ensure.
  • FIG. 1 shows a longitudinal section through a burner for gaseous fuels mounted on a heating boiler.
  • a gas burner 1 is installed in a boiler 2, the power of which is, for example, up to 300 KW.
  • a boiler wall 3 with a part of the water space 4 can be seen in fragments from the boiler 2 .
  • the gas burner 1 is screwed to the boiler wall 3 by means of a fastening flange 6 .
  • a lateral blower air supply socket 7 brings combustion air from the blower (not shown) into an air antechamber 9, which is preferably cylindrical. It is delimited by an enveloping tube 10 and an outer base 11 welded to it. Inside there is a cylinder-shaped air control plate 12 with lateral openings 13.
  • the burner housing also includes an immersion tube 14, in which there is also a tubular slider 15 is arranged to be longitudinally displaceable. Immersion tube 14 and slide. 15 are slidably mounted one inside the other by two guide rings 16, while a corresponding sealing ring 17 prevents the gas/air mixture escaping from the slider 15 from rising.
  • a burner pipe 19 is welded to the extension of the tubular slide 15, the end of which is closed by a base 20, while lateral flame holes 21 allow the combustible gas/air mixture to escape.
  • the slide 15 which is open at the rear and is bounded on the outside by the outer floor 11 on the one hand and the air control plate 12 on the other, there is an inflow chamber 23, in which the combustion air flowing in through the openings 13 meets the correspondingly exposed openings 31 incoming gas to to flow together into a mixing chamber 24 .
  • Perforated plates such as air control plate 12, are well known in fluid dynamics. Here they serve to improve the mixing process in order to premix the gas and the air before the mixing space 24 .
  • a static mixer 26 is arranged in the mixing chamber 24 .
  • turbulators such as those used in flue gas pipes, or similar baffles, which produce optimal mixing to form a homogeneous gas/air mixture, can be used.
  • the gaseous fuel passes through a gas supply pipe 28 and a connecting piece 29 into a gas metering pipe 30 which is provided with corresponding lateral openings 31 .
  • the gas dosing tube 30 is penetrated by a regulating rod 33 which can be moved back and forth from the outside and which is guided by means of a stuffing box guide 34 and by means of an end holder 35 and a screw connection 36 with a gas control tube 37 and the slide 15 is firmly connected. Ignite gas escaping from the flame bores 21 is shown as gas flames 39 .
  • the fuel gas supply on the one hand and the combustion air supply on the other hand as well as the active burner surface can be controlled by one and the same element, consisting of the slide 15, the burner tube 19 and the gas control tube 37, this control is optimal.
  • This element 15, 19, 37 can also be moved by means of a single reciprocating movement of the regulating rod 33.
  • Delivers supply pressure and the lines are dimensioned so that Lm inside the Gasdosierrohr 30 there is a substantially constant pressure, so that through the exposed, opening into the inflow chamber 23 openings 31 one of the
  • the fan conveying the combustion air is normally a fan with non-proportional or constant delivery characteristics, i.e. a fan with a non-constant delivery rate.
  • the fan conveying the combustion air is normally a fan with non-proportional or constant delivery characteristics, i.e. a fan with a non-constant delivery rate.
  • This circumstance is fan-specific in the arrangement of the openings 31 in the gas metering tube 30 to be taken into account accordingly, so that theoretically gradual, because it is about concrete openings and notteur ⁇ continuous slots, practically but steplessly into the inflow chamber 23 air and gas flow in, with an at least approximately constant quantity ratio of gas and combustion air being ensured essentially independently of the position of the regulating rod 33 or the slide 15 in the range of 10-100% nominal output.
  • This inhomogeneous mixture then flows out of the inflow chamber 23 through the static mixer 26, which it leaves as a completely homogeneous gas-air mixture in order to subsequently flow out through the openings 31 released according to the position of the slider 15 and to form gas flames 39.
  • the openings 13 and 31 are arranged and selected in shape (round, square, etc.) in such a way that the condition of the constant quantity ratio of gas/combination air is maintained over a wide performance range.
  • a rotary movement of the control pistons can also be provided, or a mixed movement.
  • the regulating rod 33 can be regulated by means of selected control variables, for example the flue gas outflow temperature and the like, in order to create a planned program by moving it accordingly.
  • the gas burner described is extremely simple in construction, reliable in operation and easy to adapt to external conditions such as a fan and the like.

Abstract

The burner is especially intended for boilers. The latter are provided with sliding and/or turning mechanisms (15, 37) so that they can maintain, at least, in the output area of between 50 and 100 per cent of the nominal output, an at least approximately constant quantity relationship between gas and combustion air. This purpose is served by the simultaneous admission of gas and air into a mixing chamber (24) having a control component such as, for example, a piston (15, 37). It is fitted with a first mobile, turning and/or sliding control piston (15), which controls the amount of combustion air with its external metal surface. At the same time, inside the first, tube-shaped control piston (15) is a second control system (37) preferably coaxial to the first control piston (15), which controls the amount of gas by means of its internal metal surface. The two control pistons (15, 37) are firmly attached to one another and can be slid to and fro and/or swung by means of an actuating device (33).

Description

Brenner für gasförmige Brennstoffe, insbesondere für Heizkessel sowie Verfahren zum Verbrennen gasförmiger BrennstoffeBurners for gaseous fuels, in particular for heating boilers, and methods for burning gaseous fuels
Die vorliegende Erfindung betrifft einen Brenner für gasförmige Brennstoffe, insbesondere für Heizkessel sowie ein Verfahren zum Verbrennen gasförmiger Brenn¬ stoffe mit Luftüberschuss bei ändernder Belastung in einer Brennkammer.The present invention relates to a burner for gaseous fuels, in particular for heating boilers, and a method for burning gaseous fuels with excess air when the load changes in a combustion chamber.
Bekannte derartige Brenner erlauben nur eine Regulierung im Bereich von 80 bis 100% der Nennleistung. Sie erschwe¬ ren daher einen möglichst gleichmässigen Betrieb eines derartigen Brenners im Sinne lang anhaltender Betriebszei¬ ten eines Heizkessels.Known burners of this type only allow regulation in the range from 80 to 100% of the rated output. They therefore make it difficult to operate a burner of this type as uniformly as possible in the sense of long-lasting operating times for a heating boiler.
Die vorliegende Erfindung bezweckt die Schaffung eines Brenners für gasförmige Brennstoffe, welcher eine Regulier- möglichkeit in grösserem Rahmen bei optimalem Betrieb desThe present invention aims to create a burner for gaseous fuels, which a possibility of regulation on a larger scale with optimal operation of the
Brenners, d.h. bei im wesentlichen über den Regulierbereich gleichbleibendem Wirkungsgrad ergibt. Eine derartige Mass- nahme liegt auch im Interesse der Umweltschutzbemühungen.burner, i.e. with an efficiency that remains essentially the same over the control range. Such a measure is also in the interest of environmental protection efforts.
Der erfindungsgemässe Brenner, welcher diesen Anforderungen im weiten Sinne entgegenkommt, zeichnet sich dadurch aus, dass Verschiebe- und/oder Drehmittel vorgesehen, sind, um mindestens im Leistungsbereich von 10 - 100% der Nennlei¬ stung ein mindestens annähernd konstantes Mengenverhältnis von Gas und Verbrennungsluft sicherzustellen.The burner according to the invention, which meets these requirements in a broad sense, is characterized in that displacement and/or rotary means are provided in order to achieve an at least approximately constant volume ratio of gas and combustion air at least in the power range of 10-100% of the nominal power ensure.
Ein Ausführungsbeispiel des Erfindungsgegenstandes wird anschliessend anhand einer Figur erläutert, welche einen Längsschnitt durch einen an einem Heizkessel angebauten Brenner für gasförmige Brennstoffe zeigt. Ein Gasbrenner 1 ist in einem Heizkessel 2, dessen Leistung z.B. bis 300 KW beträgt, eingebaut. Vom Heizkessel 2 ist bruchstückweise eine Kesselwand 3 mit einem Teil des Was¬ serraumes 4 ersichtlich. Der Gasbrenner 1 ist mittels eines Befestigungsflansches 6 an der Kesselwand 3 ange¬ schraubt.An exemplary embodiment of the subject matter of the invention is then explained with reference to a figure which shows a longitudinal section through a burner for gaseous fuels mounted on a heating boiler. A gas burner 1 is installed in a boiler 2, the power of which is, for example, up to 300 KW. A boiler wall 3 with a part of the water space 4 can be seen in fragments from the boiler 2 . The gas burner 1 is screwed to the boiler wall 3 by means of a fastening flange 6 .
Ein seitlicher Gebläseluft-Zuführstutzen 7 bringt vom Ge¬ bläse her (nicht dargestellt) Verbrennungsluft in eine Luftvorkammer 9, welche.vorzugsweise zylindrisch ist. Sie ist begrenzt durch ein Hüllrohr 10 und einen daran ange- schweissten Aussenboden 11. In seinem Inneren befindet sich ein z linderförmig angeordnetes Luft-Steuerblech 12 mit seitlichen Oeffnungen 13. Zum Brennergehäuse gehört ferner ein Tauchrohr 14, in welchem ein ebenfalls rohrför- miger Schieber 15 längsverschiebbar angeordnet ist. Tauch¬ rohr 14 und Schieber. 15 sind durch zwei Führungsringe 16 verschiebbar ineinander gelagert, während ein entsprechen¬ der Dichtungsring 17 das Aufsteigen von aus dem Schieber 15 austretendem Gas-Luftgemisch verhindert. Am rohrförmi¬ gen Schieber 15 ist in dessen Verlängerung ein Brennerrohr 19 angeschweisst, dessen Ende durch einen Boden 20 ver¬ schlossen ist, während seitliche Flammenbohrungen 21 das Austreten des brennbaren Gas -.L.uftgemisches ermöglichen.A lateral blower air supply socket 7 brings combustion air from the blower (not shown) into an air antechamber 9, which is preferably cylindrical. It is delimited by an enveloping tube 10 and an outer base 11 welded to it. Inside there is a cylinder-shaped air control plate 12 with lateral openings 13. The burner housing also includes an immersion tube 14, in which there is also a tubular slider 15 is arranged to be longitudinally displaceable. Immersion tube 14 and slide. 15 are slidably mounted one inside the other by two guide rings 16, while a corresponding sealing ring 17 prevents the gas/air mixture escaping from the slider 15 from rising. A burner pipe 19 is welded to the extension of the tubular slide 15, the end of which is closed by a base 20, while lateral flame holes 21 allow the combustible gas/air mixture to escape.
Ueber dem hinten offenen Schieber 15, aussen begrenzt einer¬ seits durch den Aussenboden 11 und' andererseits durch das Luft-Steuerblech 12, befindet sich eine Einströmkammer 23, in welcher die durch die Oeffnungen 13 einströmende Verbrennungsluft sich mit dem durch entsprechend freilie¬ gende Oeffnungen 31 einströmenden Gas trifft, um an- schliessend zusammen in eine Mischkammer 24 zu strö¬ men. Lochbleche, wie das Luft-Steuerblech 12, sind in der Strömungslehre bekannt. Hier dienen sie zur Verbesserung des Mischvorganges, um das Gas und die Luft vor dem Mischraum 24 vorzumischen. In der Misch¬ kammer 24 ist ein statischer Mischer 26 angeordnet. So können beispielsweise Turbulatoren, wie sie in Rauchgasrohren verwendet werden o. dgl. Schikanen, welche ein optimales Vermischen zu einem homogenen Gas-Luftgemisch erbringen, verwendet werden. Dabei ist darauf zu achten, dass die Abmessungen des Mischers 26 so sind, dass kein merklicher Rückstaueinfluss auf die Einströmkammer 23 auftritt oder, mit anderen Worten, dass die Einströmquerschnitte der Oeffnungen 13 und 31 im angegebenen Steuerbereich im wesentlichen allein . massgebend sind für das über den Bereich mindestens annähernd konstante Mengenverhältnis von Gas und Verbrennungsluf .Above the slide 15, which is open at the rear and is bounded on the outside by the outer floor 11 on the one hand and the air control plate 12 on the other, there is an inflow chamber 23, in which the combustion air flowing in through the openings 13 meets the correspondingly exposed openings 31 incoming gas to to flow together into a mixing chamber 24 . Perforated plates, such as air control plate 12, are well known in fluid dynamics. Here they serve to improve the mixing process in order to premix the gas and the air before the mixing space 24 . A static mixer 26 is arranged in the mixing chamber 24 . For example, turbulators, such as those used in flue gas pipes, or similar baffles, which produce optimal mixing to form a homogeneous gas/air mixture, can be used. It is important to ensure that the dimensions of the mixer 26 are such that there is no noticeable backflow effect on the inflow chamber 23 or, in other words, that the inflow cross sections of the openings 13 and 31 in the specified control range are essentially alone. are decisive for the at least approximately constant quantity ratio of gas and combustion air over the range.
Der gasförmige Brennstoff gelangt durch ein Gaszu- fuhrrohr 28 und einen Anschlussstutzen 29 in ein Gasdosierrohr 30, welches mit entsprechenden seitlichen Oeffnungen 31 versehen ist. Das Gasdosierrohr 30 wird durchsetzt von einer von aussen hin- und herbeweg- baren Regulierstange 33, welche mittels einer Stopf¬ buchsführung 34 geführt wird und mittels eines End¬ halters 35 und einer Verschraubung 36 mit einem Gas- steuerrohr 37 sowie dem Schieber 15 fest verbunden ist. Aus den Flammenbohrungen 21 austretendes entzündetes Gas ist als Gasflammen 39 dargestellt.The gaseous fuel passes through a gas supply pipe 28 and a connecting piece 29 into a gas metering pipe 30 which is provided with corresponding lateral openings 31 . The gas dosing tube 30 is penetrated by a regulating rod 33 which can be moved back and forth from the outside and which is guided by means of a stuffing box guide 34 and by means of an end holder 35 and a screw connection 36 with a gas control tube 37 and the slide 15 is firmly connected. Ignite gas escaping from the flame bores 21 is shown as gas flames 39 .
Dadurch, dass die Brenngaszufuhr einerseits und die Verbrennungsluftzufuhr anderseits sowie die aktive Brennerfläche durch ein und dasselbe Element, be¬ stehend aus dem Schieber 15, dem Brennerrohr 19 und dem Gassteuerrohr 37, steuerbar sind, ist diese Steuerung optimal. Dieses Element 15, 19, 37 kann zudem mittels einer einzigen Hin- und Herbewegung der Regulierstange 33 bewegt werden.Because the fuel gas supply on the one hand and the combustion air supply on the other hand as well as the active burner surface can be controlled by one and the same element, consisting of the slide 15, the burner tube 19 and the gas control tube 37, this control is optimal. This element 15, 19, 37 can also be moved by means of a single reciprocating movement of the regulating rod 33.
Während damit gerechnet werden kann, dass die Gas- quelle das Gas zum Gaszufuhrrohr 28 unter konstantemWhile it can be expected that the gas source supplies the gas to the gas supply pipe 28 under constant
Zufuhrdruck zustellt und die Leitungen so dimensioniert sind, dass Lm Innern des Gasdosierrohres 30 ein im wesentlichen konstanter Druck herrscht, so dass durch die freiliegenden, in die Einströmkammer 23 mündenden Oeffnungen 31 eine der Delivers supply pressure and the lines are dimensioned so that Lm inside the Gasdosierrohr 30 there is a substantially constant pressure, so that through the exposed, opening into the inflow chamber 23 openings 31 one of the
Oeffnungszahl proportionale Gasmenge ausströmt, ist dies auf der Verbrennungsluftseite anders. Bei dem die Verbren¬ nungsluft fördernden Gebläse handelt es sich normalerweise um ein Gebläse mit nicht proportionaler bzw. konstanter Liefer-Charakteristik, d.h. um ein Gebläse nichtkonstanter Fördermenge. Mit abnehmendem Gegendruck, d.h. zunehmender Anzahl in die sich, vergrössernde Einströmkammer 23 durch die Oeffnungen 13 eindringender Luftstrahlen steigt die Fördermenge des Gebläses, wobei der Druck in der Luftvor- kammer 9 sinkt. Diesem Umstand ist gebläsespezifisch bei der Anordnung der Oeffnungen 31 im Gasdosierrohr 30 ent¬ sprechend Rechnung zu tragen, so dass theoretisch stufen¬ weise, weil es sich um konkrete Oeffnungen und nicht durch¬ gehende Schlitze handelt, praktisch aber doch stufenlos in die Einströmkammer 23 Luft und Gas einströmen, wobei im wesentlichen unabhängig von der Lage der RegulierStange 33 bzw. des Schiebers 15 im Bereich von 10 - 100% Nenn¬ leistung ein mindestens annähernd konstantes Mengenver¬ hältnis von Gas- und Verbrennungsluft sichergestellt wird. Dieses inhomogene Gemisch strömt aus der Einströmkammer 23 anschliessend durch den statischen Mischer 26, den es als völlig homogenes Gas-Luftgemisch verlässt, um anschlies¬ send durch die entsprechend der Lage des Schiebers 15 frei¬ gegebenenOeffnungen 31 auszuströmen und Gasflammen 39 zu bilden.Gas quantity proportional to the opening number flows out, this is different on the combustion air side. The fan conveying the combustion air is normally a fan with non-proportional or constant delivery characteristics, i.e. a fan with a non-constant delivery rate. With decreasing back pressure, i.e. increasing number of air jets penetrating the expanding inflow chamber 23 through the openings 13, the flow rate of the blower increases, with the pressure in the air antechamber 9 decreasing. This circumstance is fan-specific in the arrangement of the openings 31 in the gas metering tube 30 to be taken into account accordingly, so that theoretically gradual, because it is about concrete openings and not durch¬ continuous slots, practically but steplessly into the inflow chamber 23 air and gas flow in, with an at least approximately constant quantity ratio of gas and combustion air being ensured essentially independently of the position of the regulating rod 33 or the slide 15 in the range of 10-100% nominal output. This inhomogeneous mixture then flows out of the inflow chamber 23 through the static mixer 26, which it leaves as a completely homogeneous gas-air mixture in order to subsequently flow out through the openings 31 released according to the position of the slider 15 and to form gas flames 39.
Es ist indessen auch möglich, durch Anbringen einer aus¬ wechselbaren Manschette auf der Aussenseite des Luftsteüer- bleches die gewünschten Oeffnungen 13 zu verschliessen. um dadurch das optimale Verhältnis Luft/Gas zu erhalten.However, it is also possible to close the desired openings 13 by attaching an exchangeable sleeve to the outside of the air control plate. in order to obtain the optimum air/gas ratio.
Die Oeffnungen 13 bzw. 31 sind so angeordnet und in ihrer Form (rund, viereckig usw.) gewählt, dass die Bedingung des konstanten Mengenverhältnisses Gas/Verhrennungsluft über einen weiten Leistungsbereich erhalten bleibt.The openings 13 and 31 are arranged and selected in shape (round, square, etc.) in such a way that the condition of the constant quantity ratio of gas/combination air is maintained over a wide performance range.
Anstelle der Schiebe-Steuerbewegung kann auch eine Dreh¬ bewegung der Steuerkolben vorgesehen werden bzw. eine gemisc Bewegung.Instead of the sliding control movement, a rotary movement of the control pistons can also be provided, or a mixed movement.
Bei zunehmender Gas- bzw. Luftmenge kann die Oeffnungs- zahl pro Hubeinheit oder ihre Grosse zunehmen.With an increasing amount of gas or air, the number of openings per stroke unit or its size can increase.
Aehnlich<=s gilt für die Flammenbohrungen 21 und deren Verteilung.Similarly<=s applies to the flame holes 21 and their distribution.
Durch gewählte Regelgrössen, beispielsweise die Rauch- gasabströmtemperatur u. dgl., kann eine Regelung der Regulierstange 33 erfolgen, um ein vorgesehenes Pro¬ gramm durch deren entsprechendes Bewegen zu gestalten. Der beschriebene Gasbrenner ist im Aufbau äusserst ein¬ fach, betriebssicher und leicht auf äussere Gegeben¬ heiten, wie Ventilator u. dgl., abzustimmen. Durch Aus- wechseln des Gasdosierrohres 30 ist es möglich, unter¬ schiedliche Gebläse-Charakteristiken zu berücksichti¬ gen und mindestens annähernd in jedem Falle ein kon¬ stantes Mengenverhältnis von Gas- und Verbrennungs- luft über weitere Leistungsbereiche, welche den wichti- gen Bereich von 50 bis 100% der Nennleistung umfassen, aber sich bis auf 10% herunter erstrecken kann, zu ge¬ währleisten. Wie Versuche zeigen, ist es auf diese Weise möglich, im Bereich von 10 - 100% der Brennernennleistung in den Rauchgasen einen sehr niedrigen CO-Gehalt von höchstens 0,01 Vol.% bei einer Luftüberschusszahl von λ 1,2 - und dies im ganzen Bereich von 10 - 100% - zu erreichen. Dassbis zu einer Belastung von ungefähr 60% der NO - Gehalt in den Rauchgasen nicht messbar ist und zwischen 60 und 100% nur in Spuren vorliegt, zeigt die äusserst geringe, ja verschwindende Umweltbelastung, welche die- ser Brenner verursacht.The regulating rod 33 can be regulated by means of selected control variables, for example the flue gas outflow temperature and the like, in order to create a planned program by moving it accordingly. The gas burner described is extremely simple in construction, reliable in operation and easy to adapt to external conditions such as a fan and the like. By replacing the gas dosing tube 30, it is possible to take account of different blower characteristics and, at least in almost every case, to maintain a constant volume ratio of gas and combustion air over other power ranges, which cover the important range of Include 50 to 100% of the nominal power, but can extend down to 10% to ensure ge. As tests show, it is possible in this way to achieve a very low CO content of no more than 0.01% by volume in the flue gases in the range of 10 - 100% of the nominal burner output with an excess air factor of λ 1.2 - and this on the whole range of 10 - 100% - to achieve. The fact that the NO content in the flue gases cannot be measured up to a load of around 60% and is only present in traces between 60 and 100% shows the extremely low, even negligible, environmental impact caused by this burner.
Es hat sich zudem erwiesen,dass oftmals der Verwendung eines rauchgasseitigen Sauggebläses derjenigen eines Druckgebläses für die Zulieferung der Verbrennungs- luft der Vorzug zu geben ist.It has also been shown that the use of a suction fan on the flue gas side is often preferable to that of a pressure fan for supplying the combustion air.
Die im übrigen markantesten Punkte dieser Brenner liegen in der Verwendung eines einzigen zu betätigenden Steuerelementes zur Steuerung des im wesentlichen konstantenMengenverhälnisses Gas/Luft und in einer variablen Brenneroberfläche. The other most striking points of these burners are the use of a single control element to be actuated to control the essentially constant volume ratio of gas/air and a variable burner surface.

Claims

Patentansprüche: Patent Claims:
1. Brenner für gasförmige Brennstoffe, insbesondere für Heizkessel, dadurch gekennzeichnet, dass Verschiebe- und/oder Drehmittel (15, 37) vorgesehen sind, um min¬ destens im Leistungsbereich von 10 - 100% der &enn- leistung ein mindestens annähernd konstantes Mengen¬ verhältnis von Gas und Verbrennungsluft sicherzustellen.1. Burner for gaseous fuels, in particular for boilers, characterized in that displacement and / or rotating means (15, 37) are provided in order min¬ least in the power range of 10 - 100% of the &enn- performance an at least approximately constant quantity ratio of gas and combustion air.
2. Brenner, vorzugsweise nach mindestens einem der An¬ sprüche, dadurch gekennzeichnet, dass zur gleichzeitigen Beaufschlagungsänderung einer Mischkammer (24) mit Gas und Luft ein als Bewegungseinheit ausgebildetes Steuer¬ element, z.B. in Kolbenform (15, 37) vorgesehen ist.2. Burner, preferably according to at least one of the claims, characterized in that a control element designed as a moving unit, e.g.
3. Brenner, vorzugsweise nach mindestens einem der Ansprü- ehe, dadurch gekennzeichnet, dass ein erster beweglicher dreh- und/oder schiebbarer Steuerkolben (15) vorgesehen ist, der mit seiner äusseren Mantelfläche die Verbrennungs- luftmenge steuert.3. Burner, preferably according to at least one of claims before, characterized in that a first movable rotating and / or sliding control piston (15) is provided, which controls the amount of combustion air with its outer surface.
4. Brenner, vorzugsweise nach mindestens einem der Ansprü¬ che, dadurch gekennzeichnet, dass im Innern des ersten rohrförmigen Steuerkolbens (15) ein zweiter, vorzugsweise zum ersten Steuerkolben (15) koaxialer Steuerkolben (37) angeordnet ist, welcher mit seiner innern Mantelfläche die Gasmenge steuert.4. Burner, preferably according to at least one of the claims, characterized in that inside the first tubular control piston (15) there is a second control piston (37), preferably coaxial with the first control piston (15), which with its inner lateral surface controls the amount of gas.
5. Brenner, vorzugsweise nach mindestens einem der Ansprü¬ che, dadurch gekennzeichnet, dass die beiden Steuerkolben •(15, 37) miteinander fest verbunden und mittels eines Betäti gungsorganes (33) hin- und herschiebbar und/oder drehbar sin 5. Burner, preferably according to at least one of the claims, characterized in that the two control pistons (15, 37) are firmly connected to one another and can be pushed back and forth and/ or rotated by means of an actuating element (33).
6. Brenner, vorzugsweise nach mindestens einem der Ansprü¬ che, dadurch gekennzeichnet, dass der erste Steuerkolben (15) auf einem Teil seiner Länge von einem mit Oeffnungen (13) versehenen Blech (12) ummantelt ist.6. Burner, preferably according to at least one of the claims, characterized in that the first control piston (15) is encased over part of its length by a metal sheet (12) provided with openings (13).
7. Brenner, vorzugsweise nach mindestens einem der Ansprü¬ che, dadurch gekennzeichnet, dass der rohrförmige zweite Steuerkolben (37) ein mit Oeffnungen (31) versehenes Gas¬ zuleitungsrohr (30) ummantelt.7. Burner, preferably according to at least one of the claims, characterized in that the tubular second control piston (37) encases a gas supply pipe (30) provided with openings (31).
8. Brenner, vorzugsweise nach mindestens einem der Ansprü¬ che, dadurch gekennzeichnet, dass im Innern des ersten Steuerkolbens (15) ein Mischer (26) angeordnet ist.8. Burner, preferably according to at least one of the claims, characterized in that a mixer (26) is arranged inside the first control piston (15).
9. Brenner, vorzugsweise nach mindestens einem der Ansprü¬ che, dadurch gekennzeichnet,' dass der eine, vorzugsweise der erste Steuerzylinder(15) einen in den Kessel (2) vor¬ stehenden Teil als Brennerrohr (19) mit Oeffnungen (21) im Mantel aufweist.9. Burner, preferably according to at least one of the claims, characterized in that the one, preferably the first control cylinder (15) has a part projecting into the boiler (2) as a burner tube (19) with openings (21) in the Coat has.
10. Brenner, vorzugsweise nach mindestens einem der Ansprü¬ che, dadurch gekennzeichnet, dass eine Schablone zum Anpas¬ sen der Luftmenge an die Gebläse-Charakteristik und Aufbrin¬ gen auf das Ummantelungsblech (12) zum ersten Steuerkolben (15) vorgesehen ist. 10. Burner, preferably according to at least one of the claims, characterized in that a template is provided for adapting the amount of air to the fan characteristics and applying it to the encasing plate (12) for the first control piston (15).
11. Brennner, vorzugsweise nach mindestens einem der Ansprüche, dadurch gekennzeichnet, dass ein einzi¬ ges Element (15, 19, 37) vorgesehen ist, um mittels dessen Bewegung gleichzeitig die Gasmenge, die Luft¬ menge und die Grosse der aktiven Brenneroberfläche zu verändern.11. Burner, preferably according to at least one of the claims, characterized in that a single element (15, 19, 37) is provided in order to simultaneously change the amount of gas, the amount of air and the size of the active burner surface by means of its movement .
12. Brenner, vorzugsweise nach mindestens einem derAnsprüche, dadurch gekennzeichnet, dass Misch¬12. Burner, preferably according to at least one of claims, characterized in that Misch¬
10 mittel (12) vorgesehen sind, um das Gas und die Luft vor dem Mischraum (24) vorzumischen.10 means (12) are provided to premix the gas and the air before the mixing space (24).
13. Verfahren zum Verbrennen gasförmiger Brenn¬ stoffe mit Luftüberschuss bei ändernder Belastung13. Process for the combustion of gaseous fuels with excess air at changing loads
-,5 in einer Brennkammer, vorzugsweise nach mindestens einem der Ansprüche, dadurch gekennzeichnet, dass man das Mengenverhältnis von Gas und Luft im Be¬ reich von 10 - 100% der Nennleistung mindestens annähernd konstant hält.-, 5 in a combustion chamber, preferably according to at least one of the claims, characterized in that the quantity ratio of gas and air is kept at least approximately constant in the range from 10 to 100% of the rated output.
2020
14. Verfahren, vorzugsweise nach mindestens einem der Ansprüche, dadurch gekennzeichnet, dass man mit einem Luftüberschuss λ 1,2 im Bereich von 1014. The method, preferably according to at least one of the claims, characterized in that with an excess air λ 1.2 in the range of 10
- 100% verbrennt bei einem CO-Gehalt von <0,01- 100% burns at <0.01% CO
25 Vol.% in den Rauchgasen und höchstens Spuren von2 5 % by volume in the flue gases and at most traces of
NOx. NOx.
PCT/CH1986/000036 1985-04-11 1986-03-14 Burner for fuel gases, especially for boilers and process for the burning of fuel gases WO1986006150A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8686901330T DE3662724D1 (en) 1985-04-11 1986-03-14 Burner for fuel gases, especially for boilers
JP61501465A JPH0735885B2 (en) 1985-04-11 1986-03-14 Burner using gaseous fuel
AT86901330T ATE41991T1 (en) 1985-04-11 1986-03-14 BURNERS FOR GASEOUS FUELS, ESPECIALLY FOR BOILERS.
DK594986A DK163741C (en) 1985-04-11 1986-12-11 GASES FOR GASFUL FUELS, ISAIRS FOR HEATING BOILERS, AND METHOD FOR COMBUSTION OF GASFUL FUELS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1542/85-4 1985-04-11
CH1542/85A CH676743A5 (en) 1985-04-11 1985-04-11

Publications (1)

Publication Number Publication Date
WO1986006150A1 true WO1986006150A1 (en) 1986-10-23

Family

ID=4212849

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1986/000036 WO1986006150A1 (en) 1985-04-11 1986-03-14 Burner for fuel gases, especially for boilers and process for the burning of fuel gases

Country Status (11)

Country Link
US (1) US4755136A (en)
EP (1) EP0218602B1 (en)
JP (1) JPH0735885B2 (en)
AU (1) AU5541586A (en)
CA (1) CA1271122A (en)
CH (1) CH676743A5 (en)
DE (1) DE3662724D1 (en)
DK (1) DK163741C (en)
ES (1) ES8701354A1 (en)
NZ (1) NZ215688A (en)
WO (1) WO1986006150A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378517A2 (en) * 1989-01-09 1990-07-18 Füllemann Patent Ag Burner for the combustion of gaseous fuels and/or liquid fuels in the gaseous state
EP0481210A2 (en) * 1990-10-13 1992-04-22 Beteiligungen Sorg GmbH & Co. KG Gas burner, especially for glass melting furnaces
WO1997027428A1 (en) * 1996-01-26 1997-07-31 Ygnis Holding S.A. Burner surface

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240409A (en) * 1992-04-10 1993-08-31 Institute Of Gas Technology Premixed fuel/air burners
ES2063694B1 (en) * 1993-03-29 1998-05-01 Marty Gineste Pierre CARBURETOR FOR A GAS BURNER.
AT402659B (en) * 1995-03-20 1997-07-25 Vaillant Gmbh MODULAR BURNER MODULABLE BURNER
US6231334B1 (en) * 1998-11-24 2001-05-15 John Zink Company Biogas flaring unit
US6162049A (en) * 1999-03-05 2000-12-19 Gas Research Institute Premixed ionization modulated extendable burner
DE10116726A1 (en) 2001-04-04 2002-10-10 Bosch Gmbh Robert Plant for the thermal treatment of workpieces with an explosive gas mixture, in particular thermal deburring plant
CA2543470A1 (en) * 2003-10-21 2005-05-12 Petroleum Analyzer Company, Lp An improved combustion apparatus and methods for making and using same
WO2005100859A1 (en) * 2004-04-19 2005-10-27 Johann Carl Morsner Variable orifice combustor
US8591222B2 (en) * 2009-10-30 2013-11-26 Trane International, Inc. Gas-fired furnace with cavity burners
DK3422741T3 (en) * 2014-04-07 2020-08-03 Oticon As HEARING AID DEVICE THAT HAS A BATTERY DRAWER

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Publication number Priority date Publication date Assignee Title
GB317582A (en) * 1928-06-25 1929-08-22 Friedrich Lilge Improvements in or relating to gas, vaporised oil or coal dust burners for furnaces
US2377497A (en) * 1943-01-07 1945-06-05 Robert C Hopkins Air controlled fuel burner
FR2255943A1 (en) * 1973-12-27 1975-07-25 Comp Generale Electricite
CH589822A5 (en) * 1975-12-11 1977-07-15 Fascione Pietro

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US1480146A (en) * 1919-12-04 1924-01-08 Grant D Bradshaw Process of and apparatus for burning gas
US2863500A (en) * 1952-02-04 1958-12-09 Hauck Mfg Co Fluid fuel burners
CH419022A (en) * 1964-09-03 1966-08-31 Haller Meurer Werke Ag All gas burners for gas fireplaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB317582A (en) * 1928-06-25 1929-08-22 Friedrich Lilge Improvements in or relating to gas, vaporised oil or coal dust burners for furnaces
US2377497A (en) * 1943-01-07 1945-06-05 Robert C Hopkins Air controlled fuel burner
FR2255943A1 (en) * 1973-12-27 1975-07-25 Comp Generale Electricite
CH589822A5 (en) * 1975-12-11 1977-07-15 Fascione Pietro

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378517A2 (en) * 1989-01-09 1990-07-18 Füllemann Patent Ag Burner for the combustion of gaseous fuels and/or liquid fuels in the gaseous state
EP0378517A3 (en) * 1989-01-09 1991-07-31 Füllemann Patent Ag Burner for the combustion of gaseous fuels and/or liquid fuels in the gaseous state
EP0481210A2 (en) * 1990-10-13 1992-04-22 Beteiligungen Sorg GmbH & Co. KG Gas burner, especially for glass melting furnaces
EP0481210A3 (en) * 1990-10-13 1992-11-19 Beteiligungen Sorg Gmbh & Co. Kg Gas burner, especially for glass melting furnaces
WO1997027428A1 (en) * 1996-01-26 1997-07-31 Ygnis Holding S.A. Burner surface

Also Published As

Publication number Publication date
DK594986D0 (en) 1986-12-11
JPH0735885B2 (en) 1995-04-19
AU5541586A (en) 1986-11-05
JPS62502492A (en) 1987-09-24
US4755136A (en) 1988-07-05
CA1271122A (en) 1990-07-03
ES8701354A1 (en) 1986-12-01
EP0218602B1 (en) 1989-04-05
DK594986A (en) 1986-12-11
DE3662724D1 (en) 1989-05-11
EP0218602A1 (en) 1987-04-22
CH676743A5 (en) 1991-02-28
NZ215688A (en) 1988-06-30
ES553827A0 (en) 1986-12-01
DK163741C (en) 1992-09-07
DK163741B (en) 1992-03-30

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